by Erik Marsja | Nov 8, 2020 | Programming, R
In this brief tutorial, you will learn how to add a column to a dataframe in R. More specifically, you will learn 1) to add a column using base R (i.e., by using the $-operator and brackets, 2) add a column using the add_column() function (i.e., from tibble), 3) add...
by Erik Marsja | Nov 4, 2020 | Programming, R
In this tutorial, you will learn how to rename factor levels in R. First, we will use the base functions that are available in R, and then we will use dplyr. To rename factor levels using levels() we can assign a character vector with the new names. If we want...
by Erik Marsja | Nov 1, 2020 | Programming, R
In this R tutorial, you will learn how to remove duplicates from the data frame. First, you will learn how to delete duplicated rows and, second, you will remove columns. Specifically, we will have a look at how to remove duplicate records from the data frame using 1)...
by Erik Marsja | Oct 16, 2020 | Programming, R
In this R tutorial, you are going to learn how to add a column to a dataframe based on values in other columns. Specifically, you will learn to create a new column using the mutate() function from the package dplyr, along with some other useful functions. Finally, we...
by Erik Marsja | Oct 6, 2020 | Programming, R
In this tutorial, you will learn by examples how to use the %in% in R. Specifically, you will learn 7 different uses of this great operator. Outline Here’s the outline of this post, described a bit more detailed than the table of contents. First, we start out with a...
by Erik Marsja | Oct 2, 2020 | Programming, R
In this brief tutorial, you will learn how to transpose a dataframe or a matrix in R statistical programming environment. Transposing rows and columns is a quite simple task if your data is 2-dimensional (e.g., a matrix or a dataframe). If you have a, for example,...
